opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/messages/DataChanged.java

   1 /*
   2  * Copyright (c) 2014 Cisco Systems, Inc. and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8
   9 package org.opendaylight.controller.cluster.datastore.messages;
  10
  11 import java.io.Externalizable;
  12 import java.io.IOException;
  13 import java.io.ObjectInput;
  14 import java.io.ObjectOutput;
  15 import java.util.Map;
  16 import java.util.Set;
  17 import org.opendaylight.controller.cluster.datastore.DataStoreVersions;
  18 import org.opendaylight.controller.cluster.datastore.node.utils.stream.NormalizedNodeInputStreamReader;
  19 import org.opendaylight.controller.cluster.datastore.node.utils.stream.NormalizedNodeOutputStreamWriter;
  20 import org.opendaylight.controller.md.sal.common.api.data.AsyncDataBroker.DataChangeScope;
  21 import org.opendaylight.controller.md.sal.common.api.data.AsyncDataChangeEvent;
  22 import org.opendaylight.controller.md.sal.dom.store.impl.DOMImmutableDataChangeEvent;
  23 import org.opendaylight.controller.md.sal.dom.store.impl.DOMImmutableDataChangeEvent.Builder;
  24 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  25 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
  26 import org.opendaylight.yangtools.yang.data.api.schema.stream.NormalizedNodeWriter;
  27
  28 public class DataChanged implements Externalizable {
  29     private static final long serialVersionUID = 1L;
  30
  31     private AsyncDataChangeEvent<YangInstanceIdentifier, NormalizedNode<?, ?>> change;
  32
  33     public DataChanged() {
  34     }
  35
  36     public DataChanged(AsyncDataChangeEvent<YangInstanceIdentifier, NormalizedNode<?, ?>> change) {
  37         this.change = change;
  38     }
  39
  40     public AsyncDataChangeEvent<YangInstanceIdentifier, NormalizedNode<?, ?>> getChange() {
  41         return change;
  42     }
  43
  44     @Override
  45     public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
  46         in.readShort(); // Read the version
  47
  48         NormalizedNodeInputStreamReader streamReader = new NormalizedNodeInputStreamReader(in);
  49
  50         // Note: the scope passed to builder is not actually used.
  51         Builder builder = DOMImmutableDataChangeEvent.builder(DataChangeScope.SUBTREE);
  52
  53         // Read created data
  54
  55         int size = in.readInt();
  56         for(int i = 0; i < size; i++) {
  57             YangInstanceIdentifier path = streamReader.readYangInstanceIdentifier();
  58             NormalizedNode<?, ?> node = streamReader.readNormalizedNode();
  59             builder.addCreated(path, node);
  60         }
  61
  62         // Read updated data
  63
  64         size = in.readInt();
  65         for(int i = 0; i < size; i++) {
  66             YangInstanceIdentifier path = streamReader.readYangInstanceIdentifier();
  67             NormalizedNode<?, ?> before = streamReader.readNormalizedNode();
  68             NormalizedNode<?, ?> after = streamReader.readNormalizedNode();
  69             builder.addUpdated(path, before, after);
  70         }
  71
  72         // Read removed data
  73
  74         size = in.readInt();
  75         for(int i = 0; i < size; i++) {
  76             YangInstanceIdentifier path = streamReader.readYangInstanceIdentifier();
  77             NormalizedNode<?, ?> node = streamReader.readNormalizedNode();
  78             builder.addRemoved(path, node);
  79         }
  80
  81         // Read original subtree
  82
  83         boolean present = in.readBoolean();
  84         if(present) {
  85             builder.setBefore(streamReader.readNormalizedNode());
  86         }
  87
  88         // Read updated subtree
  89
  90         present = in.readBoolean();
  91         if(present) {
  92             builder.setAfter(streamReader.readNormalizedNode());
  93         }
  94
  95         change = builder.build();
  96     }
  97
  98     @Override
  99     public void writeExternal(ObjectOutput out) throws IOException {
 100         out.writeShort(DataStoreVersions.CURRENT_VERSION);
 101
 102         NormalizedNodeOutputStreamWriter streamWriter = new NormalizedNodeOutputStreamWriter(out);
 103         NormalizedNodeWriter nodeWriter = NormalizedNodeWriter.forStreamWriter(streamWriter);
 104
 105         // Write created data
 106
 107         Map<YangInstanceIdentifier, NormalizedNode<?, ?>> createdData = change.getCreatedData();
 108         out.writeInt(createdData.size());
 109         for(Map.Entry<YangInstanceIdentifier, NormalizedNode<?, ?>> e: createdData.entrySet()) {
 110             streamWriter.writeYangInstanceIdentifier(e.getKey());
 111             nodeWriter.write(e.getValue());
 112         }
 113
 114         // Write updated data
 115
 116         Map<YangInstanceIdentifier, NormalizedNode<?, ?>> originalData = change.getOriginalData();
 117         Map<YangInstanceIdentifier, NormalizedNode<?, ?>> updatedData = change.getUpdatedData();
 118         out.writeInt(updatedData.size());
 119         for(Map.Entry<YangInstanceIdentifier, NormalizedNode<?, ?>> e: updatedData.entrySet()) {
 120             streamWriter.writeYangInstanceIdentifier(e.getKey());
 121             nodeWriter.write(originalData.get(e.getKey()));
 122             nodeWriter.write(e.getValue());
 123         }
 124
 125         // Write removed data
 126
 127         Set<YangInstanceIdentifier> removed = change.getRemovedPaths();
 128         out.writeInt(removed.size());
 129         for(YangInstanceIdentifier path: removed) {
 130             streamWriter.writeYangInstanceIdentifier(path);
 131             nodeWriter.write(originalData.get(path));
 132         }
 133
 134         // Write original subtree
 135
 136         NormalizedNode<?, ?> originalSubtree = change.getOriginalSubtree();
 137         out.writeBoolean(originalSubtree != null);
 138         if(originalSubtree != null) {
 139             nodeWriter.write(originalSubtree);
 140         }
 141
 142         // Write original subtree
 143
 144         NormalizedNode<?, ?> updatedSubtree = change.getUpdatedSubtree();
 145         out.writeBoolean(updatedSubtree != null);
 146         if(updatedSubtree != null) {
 147             nodeWriter.write(updatedSubtree);
 148         }
 149     }
 150 }